Alloy.



JOSEPH F. GLAPP, OF- LOS ANGELES, CALIFORNIA.

ALLOY.

Specification of Letters Patent.

Patented J an. 12, 1909.

Application filed May 2, 1908. Serial No. 430,522.

To all whom it may concern:

Be it known that I, JOSEPH F. CLAPP, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and imparts toughness.

State of California, have invented certain new and useful Improvements in Alloys, of which the following is a specification.

This invention is a ferrous alloy, or steel, characterized by great hardness, toughness, tensile strength and resistance to corrosion.

The alloy primarily comprises iron, iridium and platinum. The percentage of iron may be from to 90; of iridium from 1 to 30; and of platinum from 0.2 to 10. The iridium acts as a hardening agent and the platinum To facilitate the uniform solution of the the iron, prevent segregation upon cooling, and produce a homogeneous fine-grained product, it is found desirable to add to the alloy molybdenum and preferably copper and nickel. The percentage of molybdenum may vary from 1 to 15; of copper from 0.5 to 15; and of nickel from 0.5 to 15.

In producing the alloy, the iron, for example in the form of open-hearth steel, may be first melted, and the other component metals added thereto.

I claim 1. An alloy, comprising iron, iridium and platinum, the percentage of iron being iridium and platinum in greater than that of the iridium or plati- IlllIIl.

2. An alloy, comprising iron, iridium,

platinum and a metal or metals capable of facilitating solution of the iridium and platinum in molten iron.

3. An alloy, comprising iron, iridium, platinum and molybdenum.

4. An alloy, comprising iron, iridium, platinum, molybdenum, copper and nickel.

5. An alloy, comprising iron, iridium and platinum, the percentage of iron being from 40 to 90, of iridium from 1 to 30, and of platinum from 0.2 to 10.

6. An alloy, comprising iron, iridium, platinum and molybdenum, the percentage of iron being from 40 to 90, of iridium from 1 to 30, of platinum from 0.2 to 10, and of molybdenum from 1 to 15.

7 An alloy, comprising iron, iridium, platinum, molybdenum, copper and nickel, the percentage of iron being from 40 to 90, of iridium from 1 to 30, of platinum from 0.2 to 10, of molybdenum from 1 to 15, of copper from 0.5 to 15, and of nickel from 0.5 to 15.

In testimony whereof, I afiix my signature in presence of two Witnesses.

JOSEPH F. CLAPP.

Witnesses:

C. W. FOWLER, M. E. BRAWNER. 

